CVE-2018-9491: Google Android

High severity, CVSS 7.8. EPSS: 1.5% chance of exploitation in the next 30 days.

In AMediaCodecCryptoInfo_new of NdkMediaCodec.cpp, there is a possible out-of-bounds write due to an integer overflow. This could lead to remote code execution in external apps with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android Versions: Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9.0 Android ID: A-111603051

Affected products

• Google Android: version 7.0 only; version 7.1.1 only; version 7.1.2 only; version 8.0 only; version 8.1 only; version 9.0 only

Published 2018-10-02. Last modified 2026-06-17.